MTUS1 and metastatic malignant neoplasm in the lymph nodes: Compared to the high-expression group, the low-expression group for MTUS1 protein showed significantly larger tumor size (p = 0.047), worse histological grade (p < 0.001), more lymphovascular (p < 0.001) and perineural (p = 0.047) invasion, and lymph node metastasis (p < 0.001).